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1 /*
2  * Copyright (C) 2015 Google, Inc
3  * Written by Simon Glass <sjg@chromium.org>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <cpu.h>
10 #include <dm.h>
11 #include <errno.h>
12 #include <dm/lists.h>
13 #include <dm/root.h>
14
15 DECLARE_GLOBAL_DATA_PTR;
16
17 int cpu_get_desc(struct udevice *dev, char *buf, int size)
18 {
19         struct cpu_ops *ops = cpu_get_ops(dev);
20
21         if (!ops->get_desc)
22                 return -ENOSYS;
23
24         return ops->get_desc(dev, buf, size);
25 }
26
27 int cpu_get_info(struct udevice *dev, struct cpu_info *info)
28 {
29         struct cpu_ops *ops = cpu_get_ops(dev);
30
31         if (!ops->get_info)
32                 return -ENOSYS;
33
34         return ops->get_info(dev, info);
35 }
36
37 int cpu_get_count(struct udevice *dev)
38 {
39         struct cpu_ops *ops = cpu_get_ops(dev);
40
41         if (!ops->get_count)
42                 return -ENOSYS;
43
44         return ops->get_count(dev);
45 }
46
47 U_BOOT_DRIVER(cpu_bus) = {
48         .name   = "cpu_bus",
49         .id     = UCLASS_SIMPLE_BUS,
50         .per_child_platdata_auto_alloc_size = sizeof(struct cpu_platdata),
51 };
52
53 static int uclass_cpu_init(struct uclass *uc)
54 {
55         struct udevice *dev;
56         int node;
57         int ret;
58
59         node = fdt_path_offset(gd->fdt_blob, "/cpus");
60         if (node < 0)
61                 return 0;
62
63         ret = device_bind_driver_to_node(dm_root(), "cpu_bus", "cpus", node,
64                                          &dev);
65
66         return ret;
67 }
68
69 UCLASS_DRIVER(cpu) = {
70         .id             = UCLASS_CPU,
71         .name           = "cpu",
72         .flags          = DM_UC_FLAG_SEQ_ALIAS,
73         .init           = uclass_cpu_init,
74 };